Combined check valve and union



June 17, 1930. J TEES'DALE u 7 1,764,186

COMBINED CHECK VALVE AND UNION Filed June 13, 1928 1N VE/VTOR 80%;: fljesizze,

Patented June 11. 1930 UNITED STATES PATENTTOFFIC some n. 'rnnsnama,

or EAST eaa m mcmean connmn cnncx vuvn AND mon Application filed June 13,

tion is shown in the accompanying drawings,

in which Fig. 1 is a vertical sectional view of my improved check valve and union, shown connected in a pipe line.

Fig. 2 is a sectional view of the same on the line 22 of Fig. 1.

Heretofore considerable difiiculty has been experienced in securing a check valve which will not leak when used in a fluid line having a very low head pressure. Furthermore, the usual set of piping connections have included both a check valve and a union as separate independent units.

In my improved 'constructon, the valve is such that no leakage occurs when used with low head pressure,- and by combining the check valve and union in one unit, the cost is materially lower than where separate units are used.

In the construction shown in the drawings, a main body member 1 is provided with an axial bore therethrough, the outer end of hich is threaded to receive a pipe 2, and the inner end of which is of greater diameter than said threaded outer end. Medial of the bore, where the diameters change, an annular shoulder 3 is provided, which supports a metal washer/l, upon which is carried a ring shaped gasket 5. of pliable material such as leather.

The gasket 5. forms a valve seat for a valve which is preferably I ball 6. The inner portion of the axial bore,

taken 7 Which is of the greater diameter, has-a sleeve v 7 slidably mounted therein. One end of the sleeve 7 bears against the ring gasket 5, and

in the form of a steel 1328. sum in. 284,915.

the other end thereof projects slightly beyond the inner end 8of the body when the device is in sembled relationship, and for the distance which the ball may be lifted from its seat, when the device is in use.

A second ably the swivel member ar against the protruddisposed annular flange on thebody member 10, and threadably' engages the body member 1, as is customary in acter.

and 10 are threaded on the ends of the pi es 2 and 1-1' respectively. The washer 4, valve seat gasket 5,'sleeve 7, ball valve 6 and spider 9, are then placed in the enlarged bore of the member 1 in the order named. It is to be understood, of course, that this device i; to used in a vertical position'as shown in Fig. 1 of the drawings.

The gasket 13 is then aga-instthe face 12 of the two body members placed The coupling Although but one specific'embodiment of partially as design, which swivelly engages an outwardly In the useof this device, the members-1 and causing the body member 10, which is preferunions of this char- 7 scribed,'it will this invention has been herein shown and debe understood that numerousdetails of the construction shown may altered or omitted without departing from the spirit of this invention as defined by the following claims.

Iclaim: I 0

1. A combined check valve and union, comprising a pair of tubular body members adapted to' abut end to end in axial alignment,

' a ring. shaped gasket forming a valve seat engage said sleeve,

.ting against said gask said'sleeve protruding beyond the end of said a second tubular body member body member, having a face adapted to abut against the d whereby said sleeve binds Ike-1,186

said gasket, the other end of said sleeve 'rotruding beyond the end of said body mem er,

a s ider in said sleeve for loosely retaining sai ball valve, a second body member having an axial bore therethrough and adapted to be assembled in axial alignment with said main body member, a ring shaped gasket carried J by said second body member and adapted to a 'ut against the protruding end of said sleeve, and a coupling ring swivelly engaging one of said body members and threadably engaging the other of said body members for drawing said members toward each other against and seals both of said gaskets. I

In testimon whereof, I have hereunto set myhand at 1st day of June, 1928. JOHN B.-'TEESDALE.

sleeve slidable in' protruding end of said sleeve when in axial alignment therewith, and a coupling ring engaging both of said body members for drawing said members toward each other whereby said sleeve makes each of said gasket members.

V 3. A combined check valve and union,

comprising a. main bod member having a a sealed connection with passagewa therethroug ,an annular shoulder in sai passageway,.a ring shaped gasketsupported on said shoulder forming a valve seat, a valve for said seat, a sleeve slidable in said passageway, one end of said sleeve abutting against said gasket, the other member having a face adapted to abut rotruding beyond the end er, a second tubular body end of said sleeveof said body mem against the protruding end of said sleeve when in axial alignment therewith, a gasket interposed between said face and sleeve end,

and a coupling ring engaging both of said body members for drawing said members toward each other whereby said sleeve makes a sealed connection with each of said gasket members. a

4. A combined union and check valve, comprising a main body member having an axial bore therethrough, the inner end of said bore being of greater diameter than the outer end thereof, an annular shoulder 'at the point where said bore changes diameter, a ring shaped gasket of pliable material suported on said shoulder to form avalve seat, a ball valve for coo crating with said seat,1a sleeve slidable int e large ortion of said bore, one end of said sleeve a utting against rand Rapids, Michigan, this 

